Merge branch 'integration-nr-2019-w21' into 'develop-nr'

ci-scripts/oai-ci-vm-tool

cmake_targets/CMakeLists.txt

cmake_targets/build_oai

executables/nr-gnb.c

executables/nr-ru.c

executables/nr-softmodem.c

executables/nr-ue.c

executables/nr-uesoftmodem.c

executables/nr-uesoftmodem.h

executables/openairinterface5g_limits.h

openair1/PHY/INIT/nr_init.c

openair1/PHY/INIT/nr_init_ue.c

openair1/PHY/MODULATION/slot_fep_nr.c

openair1/PHY/NR_REFSIG/pss_nr.h

openair1/PHY/NR_TRANSPORT/nr_dci.c

openair1/PHY/NR_TRANSPORT/nr_dci.h

openair1/PHY/NR_TRANSPORT/nr_dci_tools.c

openair1/PHY/NR_TRANSPORT/nr_dlsch.c

openair1/PHY/NR_TRANSPORT/nr_dlsch.h

openair1/PHY/NR_TRANSPORT/nr_dlsch_coding.c